Machine for inserting fastenings.



T. BRIGGS.

.MACHINE FOR INSERTING FASTENINGS. APPLICATION FILED JULY :3, i910.

1 9 1 @y i; 6 Patented Apr. 20, 1915.

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THOMAS BRIGGS, 0E LEICESTER, ENGLAND, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF PAT'ERISON, NEW

JERSEY, A CORPORATION OF NEW JERSEY.

Specification of Letters Patent.

Patented Apr. 20, 1915.

Application filed July 13, 1910. Serial No. 571,752.

To aZZ whom it may concern Be it known that I, THOMAS BRIGGS, a sub-- ject of the King of England, residingat Leicester, Leicestershire, England, have 1nvented certain Improvements in Machines for Inserting Fastenings, of which the following description, in connection with the accompanying drawings, is a specificatlon, like reference characters on the drawlngs indicating like parts in the several figures This invention relates to machines for 1nsorting fastenings which comprise a puncturing tool or a nail driving tool and 1n particular to means for mounting the tool and to provisions for adjusting it and retaining it in position against the various stresses to which it is subjected during the operatlon of the machine.

In the preferred embodiment of the mvention there is provided in a machine of the class above specified the combination with a puncturing tool of a circular or other rotatable member, the tool being secured at one side of the aXis of rotation of said member in order that rotative adjustment of the member on its support shall provide an adjustment of the tool across the direction of its reciprocation or, when the tool 1s em ployed in a machine which inserts the fastenings successively to form a row, to provlde an adjustment across the row.

It will be understood that any suitable means may be used to retain the tool in adjusted position.

A convenient construction of the circular or other rotatable member hereinbefore referred to comprises an adjustable cylindrical plug in which the tool is mounted eccentrically and with this may be combined means which causes the plug to be gripped in the plug holder and at the same time causes the tool to be gripped in the plug.

The invention will now be described as applied to a slugging machine of the type disclosed in United States Letters Patent to Louis A. Oasgrain, No. 786,190, granted March 28, 1905.

In the drawings, Figure 1 is a partial front elevation of the driver and awl bar of the slugging machine; and Fig. 2 is a plan of the parts shown in Fig. 1.

In the embodiment of the invention herein shown the awl 2 is laterally adjustable in an awl bar 4 suitably positioned with respect to the other parts of the machine.

At one end of the awl bar is a projection 6 having at one side a clamping piece or plate liowhich is secured to it by means of a screw Between the projection and the clamping plate there may be atongue and groove connection 12 to assist in positioning the plate and in maintaining it in position.

Between the projection and the clamping plate a cylindrical recess is provided in which a cylindrical plug 14: is received and the awl 2 is secured eccentrically in the plug.

In the illustrated construction the awl is clamped in the plug by the same screw which presses the clamping plate 8 toward the projection 6, the plug being slotted for this purpose at 16 in order that when the screw before mentioned draws the clamping plate 8 toward the projection 6 to clamp the plug, the plug will be contracted so that the awl, or other tool, will be clamped or gripped in the plug at the same time.

The plug is provided with a transverse recess to permit the screw 10 to pass sufiiciently near the tool to grip it adequately, but it is obvious that the screw may be made to pass through lugs on the clamping plate and projection, thus doing away with the necessity for recessing the plu From the foregoing description, it will be seen that, when the plug 14 is rotated in the recess between the clamping plate 8 and the projection 6, the awl 2, or other tool, owing to its eccentric position in the plug will be adjusted across the direction of reciprocation. This construction, therefore, provides a convenient means for effecting such an adjustment without disturbing the associated parts.

The driver 22, driver bar 26 and driver clamp 32 are shown herein simply for the purpose of locating one of the lines with respect to which it is frequently desired to adjust the awl. It will be understood that in a machine of this type, as clearly set forth in the Letters Patent above referred to, one of the functions of the awl is to feed the work into such position. that the awl hole will be directly beneath the driver at the time the driver operates to drive the fastening. If the line of fastenings driven by the machine curves continuously, it is frequently necessary to so adjust the awl as to compensate for the turning of the work by the operator as he holds the work against the usual gage provided in such machines. Thus, frequently, the awl is adjusted so that it travels in a path which is not in exact alinement with the driver; that is, the plane determined by the awl in its movement does not pass through the'aXis of the driver. It will be apparent that the illustrated construction is particularly Well adapted for obtaining the accurate adjustments of the awl with respect to the driver which are necessary for obtaining the best results, and which are particularly necessary when the machine is used, as it most frequently is, for ornamenting top lifts. Any failure of the' machine to secure an exact registering of the awl holes and fastenings in ornamental slugging of course detracts very much from the appearance of the Work.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is 1. In a machine for inserting fastenings, a reciprocating tool carrying bar and means carried by the bar for attaching the tool to said bar, said means being constructed to provide bodily adjustment of the tool about an axis lying parallel to the path of reciprocation.

2. In a machine for inserting fastenings,

a reciprocating tool carrying bar and means for attaching the tool to said bar, comprising a cylindrical member laterally confined in said bar with provision for adjustment about an axis lying parallel to the path of recipro- Gopies of this patent may be obtained for cation of said bar, said tool being confined in said cylindrical member at one side of the axis of rotation.

3. In a machine for inserting fastenings, a reciprocating tool carrying bar, a cylind ical plug in which the tool is eccentrically mounted and means for clamping said plug in said bar in different angular adjustments about the axis of said plug.

4. In a machine for inserting fastenings, a reciprocating tool carrying bar and means for attaching the tool to said bar comprising a clamp provided with a cylindrical recess, a cylindrical plug in said recess in Which the tool is eccentrically mounted, said plug being rotatable in said recess to adjust said tool across the path of reciprocation of said bar and means for clamping said plug in its diiferent positions of adjustment.

5. A machine for inserting fastenings comprising a reciprocating tool carrying bar and means for attaching the tool to said bar comprising a clamp provided with a cylindrical recess, a cylindrical plug in said recess in which the tool is ecccntrically mounted, said plug being rotatable in said recess to adjust the tool bodily across its path of reciprocation and being contractible, and a single means arranged to contract said clamp to confine the plug in adjusted position and to contract said plug to grip said tool.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

THOMAS BRIGGS.

Witnesses:

ARTHUR ERNEST JnnnAM, ELEANOR PYWELL.

Washington, D. G. 

